<template>
  <div class="article-comments">
    <!-- 当前评论 -->
    <van-cell title="当前评论"
              :border="false">
      <van-image slot="icon"
                 round
                 width="30"
                 height="30"
                 style="margin-right: 10px;"
                 :src="comment.aut_photo" />
      <span style="color: #466b9d;"
            slot="title">{{ comment.aut_name }}</span>
      <div slot="label">
        <p style="color: #363636;">{{ comment.content }}</p>
        <p>
          <span style="margin-right: 10px;">
            {{ comment.pubdate | date }}
          </span>
        </p>
      </div>
      <van-icon slot="right-icon" />
    </van-cell>
    <!-- /当前评论 -->
    <van-divider>全部回复</van-divider>

    <!-- 对当前评论 回复列表 -->
    <van-list v-model="loading"
              :finished="finished"
              finished-text="没有更多了"
              @load="onLoad">
      <van-cell v-for="item in list"
                :key="item.com_id.toString()">
        <van-image slot="icon"
                   round
                   width="30"
                   height="30"
                   style="margin-right: 10px;"
                   :src="item.aut_photo" />
        <span style="color: #466b9d;"
              slot="title">{{ item.aut_name }}</span>
        <div slot="label">
          <p style="color: #363636;">{{ item.content }}</p>
          <p>
            <span style="margin-right: 10px;">
              {{ item.pubdate | date }}
            </span>
          </p>
        </div>
      </van-cell>
    </van-list>
    <!-- 回复列表 -->

    <!-- 发布回复 -->
    <van-cell-group class="publish-wrap">
      <van-field clearable
                 placeholder="请输入回复内容"
                 v-model="content">
        <van-button slot="button"
                    size="mini"
                    type="info"
                    @click="addReply">发布</van-button>
      </van-field>
    </van-cell-group>
    <!-- /发布回复 -->
  </div>
</template>
<script>
import { addReply, getReplyList } from '@/api/article'
export default {
  name: 'CommentReply',
  props: {
    comment: {
      type: Object,
      required: true
    }
  },
  data() {
    return {
      list: [], // 评论列表
      loading: false, // 上拉加载更多的 loading
      finished: false, // 是否加载结束
      offset: null,
      content: ''
    }
  },
  methods: {
    async onLoad() {
      const res = await getReplyList(this.comment.com_id.toString(), this.offset)
      // console.log(res)
      this.offset = res.data.last_id
      this.list = [...this.list, ...res.data.results]
      // 修改loading
      this.loading = false
      // 判断是否还有更多
      if (res.data.results.length < 10) {
        this.finished = true
      }
    },
    async addReply() {
      if (!this.content) return this.$toast('回复的内容不能为空')
      const res = await addReply(
        this.comment.com_id.toString(),
        this.content,
        this.$route.params.id
      )
      // console.log(res)
      this.list.unshift(res.data.new_obj)
      this.$toast.success('回复成功')
      this.content = ''
      // 子传父
      this.$emit('addCount')
    }
  }
}
</script>
<style lang="less" scoped>
// 发表评论的区域是固定在下端的
.publish-wrap {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
}
// 给发表评论区空出地方
.van-list {
  margin-bottom: 45px;
}
</style>
